ArmaFlex Rail SD Insulation – Premium Closed-Cell Pipe Lagging for UK Rail & Transport

ArmaFlex Rail SD is a high-performance, flexible closed-cell elastomeric pipe insulation designed for UK rail, metro, tram, and transport applications. This advanced rail insulation from Armacell provides superior thermal insulation, condensation control, and acoustic insulation, protecting HVAC systems, chilled water pipes, and hot water lines in trains, carriages, and commercial vehicles.

Key Technical Benefits of ArmaFlex Rail SD Pipe Insulation

• Excellent Thermal Efficiency: λ = 0.034 W/(m·K) at 0°C – reduces energy loss in rail HVAC insulation.
• Built-in Vapour Barrier: Closed-cell structure prevents condensation on pipes without extra coatings.
• Wide Operating Range: -50°C to +110°C – ideal for cold water pipe insulation and heating system lagging.
• BS 476 Class 0 & FM Approved: Meets strict UK rail fire safety standards.
• Zero ODP, GWP <5: Environmentally friendly eco insulation for transport.
• Noise Reduction: Minimises vibration and structure-borne sound in trains.

Technical Specifications

Installation Guide – ArmaFlex Rail SD

ArmaFlex Rail SD is designed for fast, clean, and reliable pipe insulation installation in rail and transport environments. Follow these steps for optimal performance:

1. Preparation

• Ensure pipe surface is clean, dry, and free from oil, grease, or dust.
• Measure pipe diameter and select correct ArmaFlex tube size (internal diameter should match pipe OD).
• Use the ArmaFlex template or the pipe circumference guide for accurate cutting.

2. Cutting & Fitting

• Cut tubes or sheets with a sharp, non-serrated knife for clean edges.
• For self-adhesive tubes: Peel release paper gradually and press firmly along the seam.
• Apply even pressure to activate high-tack adhesive – no additional glue required in most cases.
• For bends and elbows: Use pre-formed fittings or mitre-cut sections and seal with ArmaFlex adhesive.

3. Sealing & Finishing

• All joints, butt edges, and terminations must be sealed with ArmaFlex 520 Adhesive or self-seal tape.
• Overlap longitudinal seams by 10–15mm and compress firmly.
• Protect outdoor installations with ArmaFlex Protect or UV-resistant cladding.

4. Valves, Flanges & Fittings

• Use an ArmaFlex sheet to fabricate boxed insulation covers.
• Secure with adhesive and ArmaFlex tape for a full vapour seal.

Tip: For cold lines below 10°C, allow adhesive to tack (2–5 mins) before joining. Always install in dry conditions above 5°C.

Download full ArmaFlex Rail SD Installation Guide (PDF) from PipeLagging.com.

Ideal Applications for ArmaFlex Rail SD

Engineered for rolling stock insulation, underground train pipe lagging, trams, buses, and fleet vehicles. Perfect for:

• Chilled water pipe insulation in air conditioning systems
• Hot water pipe lagging for heating circuits
• Refrigeration line insulation
• Condensate drain insulation
• Ventilation duct insulation

Easy Installation & Product Formats

Available in self-adhesive insulation tubes, insulation sheets, and continuous rolls. Flexible material fits bends, valves, and fittings. High-tack self-seal pipe insulation speeds up installation on-site with long-lasting adhesion.

Durability & Long-Term Performance

• UV and weather resistant – suitable for external pipe insulation
• Oil, grease, and chemical resistant
• Mould and bacteria resistant – meets hygiene standards

Why Buy ArmaFlex Rail SD from PipeLagging.com?

UK stock with next-day delivery. Full range: 9mm–32mm thickness, all diameters. Cut-to-size insulation service available. Fully compliant with UK rail insulation regulations and building standards.

Order ArmaFlex Rail SD pipe insulation today at www.pipelagging.com – your trusted UK supplier for rail pipe lagging, transport insulation, and energy-efficient thermal solutions. Expert advice and fast nationwide shipping guaranteed.